Intelligent substation secondary equipment test platform based on all-digital real-time emulation

Abstract

The invention provides an intelligent substation secondary equipment test platform based on all-digital real-time emulation. A real-time data forwarding platform comprises a digitization interface device. The digitization interface device comprises a computer case, a base plate, a power source plate, a synchronous plate and function plates, wherein the base plate, the power source plate, the synchronous plate and the function plates are located in the computer case, the number of the function plates ranges from one to six, and the base plate provides a power source bus and a synchronous bus for the digitization interface device through the inserted power source plate and the synchronous plate. The digitization interface device is communicated with the Ethernet through a hundred M exchanging chip and an emulation system computing platform, the synchronous plate receives and decodes an external synchronous signal and sends the decoded synchronous signal to the synchronous bus, and all function plates are connected with the synchronous bus to guarantee clock synchronization. According to the provided test platform, the digitization interface device which is of a computer case structure is adopted in the real-time data forwarding platform, and the number of the function plates inserted into the digitization interface device can be selected according to the scale of an intelligent substation to be tested.

Description

technical field [0001] The invention relates to the field of intelligent substations, in particular to an intelligent substation secondary equipment test platform based on all-digital real-time simulation. Background technique [0002] There are big differences between smart substations and conventional substations in terms of data acquisition and equipment connection. The smart protection device collects digital voltage and current signals of electronic transformers through the merging unit, and no longer uses hardware modules such as isolation transformation, filtering, and sample-and-hold. The transmission of tripping and closing signals is also changed from cable hard wiring to optical fiber Ethernet connection, so the traditional substation testing technology cannot be directly applied to smart substation testing. In order to realize the test or test of the smart substation, the test tool or system should be able to provide digital voltage and current information in com...

AI Technical Summary

Problems solved by technology

The conversion accuracy of the digital interface is not high, and the conversion timing is not accurate, which will introduce errors in the test; the conversion rate of the digital interface is low, so the simulation step size cannot be set to a small value

Images